/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.bean.fcomps.wrapper;

import java.util.LinkedList;

import org.jbfilter.bean.FilterComponentBean;

/**
 * <p>
 * An example for {@link FilterComponentBean} wrapping (decoration).
 * </p>
 * Here we wrap for the purpose of counting the discarded beans.
 * @author Marcus Adrian
 *
 * @param <E>
 */
public class StatisticsFilterComponentBeanWrapper<E> extends DefaultFilterComponentBeanWrapper<E> {

	private int discardedCount;
	public StatisticsFilterComponentBeanWrapper(FilterComponentBean<E> filterComponent) {
		super(filterComponent);
	}
	@Override
	public void filterOut(LinkedList<E> coll) {
		discardedCount = 0;
		super.filterOut(coll);
	}
	@Override
	public boolean pass(E bean) {
		boolean passed = super.pass(bean);
		if (!passed) {
			discardedCount++;
		}
		return passed;
	}
	/**
	 * How many beans where discarded (filtered out) ?
	 * @return the count of discarded beans
	 */
	public int getDiscardedCount() {
		return discardedCount;
	}

}
